Geographic Information Systems

Welcome to Geographic Information Systems (GIS)

The GIS Division supports and maintains the County's geographic base map. This division provides mapping and analysis support for County departments, outside agencies and the public. GIS is the public's portal to geographically referenced data for all County departments, with links to other county systems.

My Neighborhood

With the "MyNeighborhood" map you can obtain property-based data such as address, valuation, and districting. Also find aerial photos, your favorite trail, and much more.

Open Data Portal

This is our public platform for exploring, filtering, and downloading GIS data. A great place to start if you want to make your own map!

PDF Maps

Our most requested maps are available in a large page PDF format and require Adobe Acrobat Reader or a similar program for viewing.

Map Gallery

The Map Gallery provides you with features all of our web applications as well as specific purpose web maps.